Make the status of tasks more visual

It would be very useful to have more visual control of tasks, for example:

- When a task is completed, in addition to the checkbox appearing as checked, it should be painted green and bold (older versions of GLPI were much more visual in this sense).

- When filtering by tasks in the Timeline, you can sort them by state, for example put the "To do" tasks at the top and the completed ones at the bottom.